Outlet control valve



Dec. 26, 1939. G. w. WHITEHURST OUTLET CONTROL VALVE original Filedsept. 13, 195? Patented Dec, 26, 193@ UNITED stars zdiiiit ser OUTLET CONTROLVALVE George W. Whitehurst, Portsmouth, Va.

Original application September 13, 1937, Serial Divided and this applicationrMay 24, 1938, Serial No. 209,814

3 Claims.

valvular element for the oil supplied for high res and an adjustable valvular element coacting with the said other element for controlling the oil supplied for low fires to a minimum.

A further object of the invention is to provide, in a manner as hereinafter set forth, an outlet r valve for oil supplied for high fires formed with a port for the passage of thel oil supplied for low fires, and an adjustable regulating element of valvular form coacting with said port for regulating the amount ofthe oil supplied for low fires.

A furtherobject of the invention is to-provide, in a manner as hereinafter set forth, a structure of the type referred to, including a supply or outlet valve having large capacity for oil delivery for high fires.

A further object of the invention is to provide, in al manner as hereinafter set forth, a structure of the type referred to including a liftable high re controlling valve, a lower re controlling valve and means for scavenging or flushing out the accumulations of small particles that may collect around the low fire controlling valve, each time the high re controlling valve is lifted from its seat.

A further object of the invention is to provide, Ain a manner as hereinafter set forth, a structure of the type referred to having the high and low nre valves with their coacting ports and passagesso arranged in related manner and below the oil level so that all air may escape due to the greater bcuyancy caused by greater depth. and after all air is out these ports and passages refilled with cil even though the oil supply in float chamber and burner has been exhausted.

A further object of the invention is to provide, in a manner es hereinafter set forth, a structure of the type referred to including a controllable supply or outlet valve having large capacity for oil delivery for high fires and formed with means for small oil delivery for low fires, and with said structure including adjustable means associated with said valve for regulating delivery for small fires to an extent whereby delivery for low fires, if desired may be at the rate of afew drops per minute.

A further object of the invention is to provide, in a manner as hereinafter set forth, a structure of the type referred to including means for controlling cil feed for high fires and means coacting with and engaging in the said other means for controlling oil feed for low4 fires.

Further objects of the invention are to provide, in a manner as hereinafter set forth, a structure for the purpose referred to which is simple in its vconstruction and arrangement, strong, durable, 1

compact, thoroughlyefcient in its use, expeditiously installed with respect to an oil supply, readily assembled, and comparatively inexpensive to manufacture.

To the above ends essentially and to others which may hereinafter appear, the` invention consists of the novel construction, combination and arrangement of parts as will be more specically described and illustrated in the accompanying drawing wherein is shown an embodiment of the invention, but it is to be understood that changes, variations and modifications may be resorted to which fall within the scope of the invention as claimed.

In the drawing:

Figure 1 is a vertical sectional view illustrating, by way of example, the controllable oil outlet structure, `in accordance with this invention installed with respect to a safety control and oil levelling valve structure of the lform set forth in my co-pending application aforesaid,

Figure 2 is a fragmentary view in vertical section and upon an enlarged scale of the controllable oil outlet structure inaccordance with this invention,

Figure 3 is a section on linev 3 3, Figure 2,

Figure i is a vertical sectional view of the housing forming an element of the controllable oil outlet structure,

Figure 5 is a detail in sectionk and side ele-vation showing the adjustable regulating element, and

Figure 6 is a section online t, Figure 2.

With reference to Figure i of the drawing the controllable oil outlet structure is generally indicated at 8 and which is coupled to and perrnanently opens into a source of oil. The said source, by wayof example, is shown as a safety controland oil levelling structure il disclosed by my co-pending application aforesaid. As' the structure S forms no part of this invention, nor is it claimed, it is thought not necessary to specilically describe it other than to refer to the outlet lil for the oil reservoir l l. The latter is provided by the housing l2. The outlet H) is in the bottom I3 of housing I2. It is to be understood that the structure 8 is for communication with other sources of oil other than that as shown.

The structure 8 includes a tubular housing 32 which is coupled to the bottom I3 of housing I2.

` The housing 32 consists of an upstanding tubular part 33 provided between its transverse median and its lower end with an internal beveled valve seat 34 and above and in proximity to seat 34 with an outlet opening 35 and a laterally disposed downwardly inclined tubular conducting off branch 35 permanently communicating at its inner end with the opening 35. The branch 36 is internally threaded for connecting thereto an oil delivery line, not shown for supplying the burner not shown. Below the valve seat 34, the part 33 is formed with an inclined threaded opening 31 closed by a cap screw 38. The part 33 in alignment with the opening 3l and below valve seat 34 is provided with an opening 33 disposed at the same inclination as opening 3l. Integral with the part 33 and extending in an opposite direction with respect to that of the branch 35 is a laterally disposed tubular angle-shaped feed branch 4U, having a. leg 4I disposed at an inclination with respect to the horizontal and a vertically disposed leg 42 at the outer end of leg 4I.

The leg 42 at its inner end merges into the part 33. The leg 4I is internally threaded and engaging therewith is a tubular nipple 30, which not only connects housing 32 to housing I2, but also establishes communication between the reservoir II and the outlet valve chamber 43 formed by that portion of part 33 above valve seat 34. The part 33 below the openings 31, 39 is formed with a group of threads 44 on its inner face and with form diameter and of less length than the part 49. The head 4B is provided with an angle-shaped port 5I formed of a vertical branch 52 and a horizontal branch 53. The branch 52 is disposed axially of and opens at the lower end of head 48. The branch 52 extends to the part 53 of head 48 and opens at its upper end into the inner end of branch 53. The latter is formed in and opens at its outer end at the side of part 43. The part 5B of head 43 is of less diameter than that of chamber 43 above the valve seat 34. Integral with and axially of the top oi' head 48 is a Stem 54, of a length to project above the upper end of part 33 and formed with a stop collar 55. Extending into the top and threadedly engaging with the threads 53 on the inner face of part 33 is a hanged tubular high re adjusting screw cap 5l formed at its top with an opening 53 for the passage of stem 54. The cap 5l is to seat against the collar 55 when adjusting stem 54. A lock nut 53 for the screw .5l is mounted on the top of part The stem 54 above cap 51 carries a dust collar 59ab and has its upper end bifurcated, as at 33 for attachment thereto by a connection 3i, a heavy fire control not shown, operated from a thermostat.

The inner diameter of that portion of the part 33 which depends from the valve seat 34 is less than that of the valve chamber 43 and adjustably mounted in such portion` is an oil feed regulating element 52 which associates with the valve head 48 and includes a vertically adjustable carrier 63 of rod-like form formed with an upper portion B4 provided with a pair of spaced groups of peripheral threads 55, 65 and an annular peripheral groove G'I separating the groups of threads. 'Ihe carrier 33 includes a plain lower portion 68 having a polygonal shaped outer end 69. The carrier 33 is of circular cross section and' its groups of threads adjustably engage with the threads 44 of part 33. The element 32 depends from the lower end of part 33 through a packing gland or cup 'I3 and the packing means 'Il in the latter. The gland is internally threaded and engages with the threads 46 on part 33. The portion 64 of carrier 33 is formed with an axial socket I2 opening at its upper end. Extended into the socket I2 is the lower portion of an upstanding feed regulating member inthe form of a tapered needle valve 13 provided with a flange I4 which seats on the top of portion 64. The valve I3 is of a length to extend into the leg 52 of the port 5! in head 48. The needle valve I3 is slightly loosely tted in socket l2 for alignment with branch 52 of port 5I and is secured to element 33 by a pin 62a. The diameter of the upper portion of valve 13 is materially less than that of branch 52 of port 5I. The upward and downward movement of element 52 is limited by a stop member in the form of a cap screw .15 having a reduced inner end 'I8 arranged in the groove 5l. The screw 'l5 extends through and threadedly engages with the wall of the opening 45. The head of screw 'I5 abuts the boss 4l'. The reduced end 'I5 of screw 'I5 is of a widthand breadth less than that ofthe width of groove 3l.

The valve 48 is uted to' permit air to escape. The upward movement of the valve 43 is arrested by collar 55 abutting screw 5l. The port 48 about .005 of an inch to insure positive seating v of valve 48 even though slightly out of alignment.

This arrangement permits a close setting of voil for low re in an easy manner, and a ilushing out of the minute particles that accumulate at the small settings. Every time the valve 48 is raised oil passes out through outlet 33 to burner, or when y valve 48 is sealed oil passes to the burner through the port 5I when the latter is not closed by the regulating element. On high re oil is supplied through port 5I and under valve head 48 simultaneously.

The upper end of valve 54 and inner wall of adjusting screw 5'! can be threaded for manually operating valve head 48 to and from itsseat 34.

The valve head 48, needle valve 'I3 and outlet port 35 are located substantially below bottom I3 of the housing so that coupling 33, ybranch 45, port 5i and pipe connecting 35 to burner, not shown, will always be full of oil, when once free of air, even when oil is shut oi and burner has consumed all the oil that will enter burner. This important oil conducting course is completely filled with oil.

What I claim is: v

1. In a controllable liquid fuel outlet structure for use in connection with liqudfuel burners, an upstanding tubular housing provided on its inner face intermediate its ends with a tapered intake in proximity to the bottom of said seat, a fuel outlet in proximity to the top of said seat and internal threads below said seat, a peripherally luted tapered controllable liquid fuel outlet controlling valve for high fires within the housing above and for correlation with said seat, said valve being formed with a port having a vertical and a horizontal leg for the passage of fuel for low lires when the valve is seated, a vertically adjustable, upstanding, revoluble regulating means within and threadedly engaging directly with the housing and positioned below said seat for correlation with the valve port to control the supply of fuel for low fires when the valve is seated, said means being formed at its upper portion with a pair of spaced peripheral groups of threads separated by an endless groove, said means including a loosely mounted needle valve at its upper end for correlation with the vertical leg of said port, and a stop carried bythe housing and engaging in and coacting with the walls of said groove for limiting' the extent of movement of the said means in opposite directions lengthwise of said housing.

v2. A controllable liquid fuel outlet structure for use in connection with liquid fuel burners, said structure comprising an upstanding tubular housing provided on its inner face intermediate its ends with a tapered valve seat, said housing being formed with a fuel intake below and in proximity to the bottom of said seat, a fuel outlet above and in proximity to the top of said seatand internal threads on its .inner face below said intake, a peripherally vertically fluted tapered controllable liquid outlet controlling valve for high res within the housing above and for correlation with said seat, said valve being vformed with a port having a vertical and a horizontal leg for the passage of fuel for low fires when the valve is seated, said vertical leg opening at its lower end at the bottom of the valve, said horizontal leg opening at the side of the valve, a revoluble vertically adjustable carrier o-f'rod-rlike form mounted in the lower portion oi and extending from the lower end of the housing, such carrier being formed with peripheral threads for engagement with the threads of the housing, said carrier provided at its upper end with a socket, a needle valve seated intermediate its ends on the top edge of the carrier for correlation with said vertical leg and extending into said socket and loosely connected to the carrier, and said carrier and housing having coacting means for limiting the extent of the vmovement of the carrier in opposite directions.

3. A controllable liquid fuel outlet structure for use in connection with liquid fuel burners, said structure comprising an upstanding tubular housing provided on its inner face intermediate its ends with a tapered valve seat, said housing being formed with a fuel intake below and in proximity to the bottom ofsaid seat, a fuel outlet above and in proximity to the top of said seat and internal threads on its inner face below said intake, a peripherally vertically fiuted tapered controllable liquid outlet controlling valve for high res within the housing above and for correlation with said seat, said valve being formed with a port having a vertical and a horizontal leg for the passage of fuel for low fires when the valve is seated, said vertical leg opening at its lower end at the bottom of the valve, said horizontal leg opening at the side of the valve, a revoluble vertically adjustable carrier of rod-like form mounted in the lower portion of and extended from the lowend of the housing, such carrier being formed with peripheral threads for engagement with the threads of the housing, said carrier provided at its upper end with a socket, a needle valve seated intermediate its ends on the top edge of the carrier for correlation with said vertical leg and extending into said socket and loosely connected to the carrier, said carrier and housing having coacting means for limiting the extent of the movement of the carrier in opposite directions, and a packing means secured against the lower endof the housing and encompassing carrier.

GEORGE W. WHITEHURST. 

